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The inside of a chocolate fudge brownie with marshmallow swirl.
5 stars (1 rating)

Easy and Rich Marshmallow Brownies

Prep: 10 minutes
Cook: 30 minutes
Total: 40 minutes
Servings: 16 brownies
These Easy and Rich Marshmallow Brownies are the perfect combination of rich, sweet chocolate flavor with fluffy marshmallows. Fudgy brownies are topped with a layer of marshmallows and then frosted with a decadent fudge icing. These will become a family favorite!
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Ingredients

  • 1/2 cup (113.5 g) butter
  • 6 oz (170.1 g) semi sweet chocolate chips, about 1 heaping cup
  • 1 cup (200 g) granulated sugar
  • 3 (3) eggs, large
  • 1 tsp (1 tsp) vanilla extract
  • 1/2 cup (62.5 g) flour
  • 1/4 cup (21.5 g) cocoa powder
  • 1/2 tsp (0.5 tsp) salt
  • 2 cups (100 g) mini marshmallows, or 10 oz bag

For Frosting:

  • ¼ cup (56.75 g) unsalted butter, 56g
  • ⅓ cup (28.67 g) cocoa, 35g
  • 2 cups (240 g) confectioners sugar, 227g
  • 3 tbsp (3 tbsp) milk

Instructions
 

  • Preheat the oven to 350° F and line an 8×8 inch pan with parchment paper or spray with nonstick baking spray.
  • Melted chocolate in a glass bowl with a spatula.
    In a microwave safe bowl combine the 1/2 cup butter and 6 oz chocolate. Microwave for 30 seconds at a time stirring in between until the chocolate is melted. About 90 seconds total. Let the chocolate cool for 2 minutes.
  • In a medium bowl add the 1 cup sugar and 3 large eggs and whip on high speed using an electric mixer for 3 minutes. You can use a hand mixer or a stand mixer fitted with the whisk attachment.
  • Fudge brownie batter in a glass bowl.
    Add the chocolate and butter mixture into the eggs. Use a spatula for this. Add the 1 tsp vanilla extract and mix.
  • Next add in the 1/2 cup flour, 1/4 cup cocoa powder, and 1/2 tsp kosher salt. Mix gently until combined.
  • Fudgy brownie batter in a 8x8 pan.
    Pour the batter into the prepared pan and bake for 26-28 minutes.
  • Mini Marshmallows on top of baked brownies.
    Remove the brownies from the oven and add 2 cups of mini marshmallows on top.
  • Either return the brownies to the oven for 3 minutes (be careful not to burn the marshmallows!) or torch the marshmallows with a kitchen torch- my preferred way!
  • Make the brownie frosting. In a large bowl melt the butter 30 seconds at a time in the microwave until fully melted.
  • Add in the ⅓ cup cocoa powder and whisk until smooth.
  • Add in the 2 cups of confectioners sugar and 3 tbsp milk.
  • Chocolate frosting covering marshmallow brownies in a brownie pan.
    Immediately spread on top of the marshmallows and let set. The frosting will harden quickly so don’t wait to slather it on top!
Serving: 1brownie, Calories: 300kcal, Carbohydrates: 43g, Protein: 3g, Fat: 14g, Saturated Fat: 8g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 4g, Trans Fat: 0.4g, Cholesterol: 55mg, Sodium: 139mg, Potassium: 132mg, Fiber: 2g, Sugar: 35g, Vitamin A: 320IU, Calcium: 22mg, Iron: 1mg
Course: Dessert
Author: Sam Adler
Cuisine: American
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